code: def handle_data(self, data):
      for stock in self.rl.leveraged_etf_list.current_securities(
          self.get_datetime()
      ):
          if stock == self.sid:
              self.found = True
  
file_path: catalyst/tests/test_security_list.py
imports: from catalyst.algorithm import TradingAlgorithm
  from catalyst.utils.security_list import SecurityListSet, load_from_directory
label_desc: Use image node_id 2 for calling the IterateRLAlgo obj's underlying member method code with example usage: obj.handle_data(data) without return types